feat(user-apps): appearance settings (dark mode + reduced motion), product morph, filter sheet

Applies to both user-app and user-app-v2. Logic and structure are shared;
each app keeps its own look.

Appearance settings
- New "تنظیمات ظاهری" page (/settings/appearance), opened from the
  dashboard and available without login. It offers a light/dark/system
  theme and a "fast & light" motion switch.
- appearanceStore saves the choice to localStorage. A small inline boot
  script in index.html applies it before first paint so there is no
  white flash. The "system" option follows OS changes live.
- New ToggleSwitch component.

Dark mode
- Theme LESS tokens now compile to CSS custom properties. Light/dark
  values come from a generated virtual:palette.css (themeConfig/
  appearance.ts, with colors.json + new colors.dark.json).
- New LESS alpha() plugin replaces fade() on theme tokens.
- New semantic tokens: page, onInk, heroSurface, hairlineStrong,
  photoMat, photoStage.
- The dark palette is layered (page < card < panel < border) so
  surfaces separate without shadows.
- Hard-coded colors were replaced by tokens according to their role.
- antd inputs/text get dark overrides; vant uses its own
  .van-theme-dark.
- Light mode looks the same as before.

Reduced motion
- With html.motion-reduced, transitions are capped at 120ms, keyframe
  loops stop, and backdrop blurs and permanent will-change are dropped.
- Spinners and the toast progress bar (which closes the toast) are
  exempt via .keep-motion.
- Carousel autoplay, the v1 Lottie and the product morph honor the
  setting.

Product detail
- Opening a product is now a container-transform morph from the tapped
  card (ProductMorph). It replaces the bottom Drawer and uses composited
  transform/opacity only.
- The detail view is seeded with the card's data, so it no longer
  opens blank and jumps.

Filters and sheets
- Filters are now a full-width bottom sheet. Selections stay a draft
  until applied, so the result list no longer re-renders while
  dragging the slider.
- DropDown collapse animates grid-template-rows instead of a capped
  max-height.
- v2 IslandSheet is restyled to the v2 design language (API unchanged).

Fixes
- filtersStore.reset() shallow-copied shared arrays, so clearing the
  filters never cleared the selected brands.

apps/user-app-v2/src/utils/orderStatus.ts

@@ -20,12 +20,17 @@ export const ORDER_STATUS_LABELS: Record<string, string> = {
 // colored sts 1,3,4,5,6 (never sts=0 or sts=2), an existing gap preserved here
 // for the directly-analogous statuses (ADMIN_APPROVED, SUSPENDED, CANCELLED
 // stay uncolored, same as legacy's untouched sts=0/2).
+//
+// Backgrounds are the font colour at 12% alpha (the trailing 1F), not the
+// opaque pale tints they used to be: a translucent wash reads the same on a
+// white card and stays a soft tint on a dark one, where #EFF6FF & co. were
+// glaring light patches.
 export const ORDER_STATUS_COLORS: Record<string, { font: string; background: string }> = {
-  PLACED: { font: '#3B82F6', background: '#EFF6FF' },
-  SOURCING: { font: '#EAB308', background: '#FEFCE8' },
-  PREPARING: { font: '#F97316', background: '#FFF7ED' },
-  DELIVERED_TO_AGENT: { font: '#06B6D4', background: '#ECFEFF' },
-  DELIVERED_TO_CUSTOMER: { font: '#22C55E', background: '#F0FDF4' },
+  PLACED: { font: '#3B82F6', background: '#3B82F61F' },
+  SOURCING: { font: '#EAB308', background: '#EAB3081F' },
+  PREPARING: { font: '#F97316', background: '#F973161F' },
+  DELIVERED_TO_AGENT: { font: '#06B6D4', background: '#06B6D41F' },
+  DELIVERED_TO_CUSTOMER: { font: '#22C55E', background: '#22C55E1F' },
 };
 
 // Ported from legacy Orders.vue's 4-step tracker (`steps`/`setCurrentStep`).